Canada



J. T. HUTCHINSON, V. SHAW AND F. BARNES. PROCESS or MAKING GLAZING BARS.

APPLICATION FILED JUNE I18. I9IB.

1,341,271. 1mm May 25,1920.

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Fran Zarms.

UNITED STATES PATENT OFFICE.

JOSEPH TELFER HUTCHINSON, VERNON SHAW, AND FRANK BARNES, 0F VANCOUVER, BRITISH COLUMBIA, CANADA.

PROCESS OF MAKING GLAZING-IBARS.

Specification of Letters Patent.

Patented May 25, 1920.

Divided and this application filed June 18,

1918. Serial No. 240,703.

.To all whom it may concern:

Be it known that we, Josnrn Tnnrnn HU'roHINsoN, VERNON SHAW, and FRA NK BA'nNns, respectively subjects of: the King of Great Britain, and residents of the c ty of. Vancouver, in the Province of British Columbia, Canada, have jointly invented certain new and useful 1m rovements in Processes of Making Glazingars, of which the following is a specification.

Our invention relates to improvements in processes used in the covering of bars with lead or other suitable material. in the production of what are known to those skilled in the art as glazing bars, and the object of our invention is to devise a process by the use of which a finished leadcovered glazins bar having main and condensation gutters is evolved with the minimum of labor.

This application is a division of the application Serial No. 225,283, filed March 28,

1918, glazing bars and process of making same.

I11 carrying out the process a die is used, through which die the viscid lead from a lead pot is forced, to emerge therefrom as the lead cover for the T bar which forms the core, the cover being of a length according to the capacity of the lead pot and transversely triangular in shape having out standing wings extending intermediate the length of its sides and outstanding walls adjacent its base angles, these angles being flattened and the base being extended at each end beyond the flattened angles.

Into this cover form is inserted a steel T bar and the form is then deformed so as to envelop or bug the T whereby the wings take a horizontal position, the walls take a vertical position to form a main gutter and the base extensions an upwardly inclined position to form condensation gutters.

The invention is illustrated in the accompanying drawing in which,

Figure 1 is a plan view of the die.

Fig. 2 is an elevation, in part section.

Fig. 3 is a plan view of the die plate, the core being shown in cross section.

Fig. 4 is an elevation of the die core and bridge. a

Fig. 5 is a cross section of the lead cover.

Fig. 6 is a perspective view of a portion of the finished glazing bar.

The die, which is formed of any suitable material and as shown in Figs. 1 and 2, consists of a member 1 formed cylindrical on its outside, and provided at one end with an exterior-1y threaded extension 2 by means of which it may be detachably secured to the operating plunger (not shown). A bell mouth 3 is formed in the opposite end of the member 1., which mouth extends thereinto approximately half the length of the member, terminating in an annular seat portion 1, the diameter of which is equal to the diameter of the inmost end of the bell mouth, and in the annular portion is removably disposed a die plate 5, the thickness of which plate is substantially equal to the depth of the annular portion 4.

The die plate 5 is provided centrally with a triangular shaped opening 6 from the sides of which opening intermediate their length extend outwardly slots 7 and 8, while adjacent the base angles of the opening 6 portions 9 and 10 are cut out of the plate, and the base angles flattened, as also are portions 11 and 12 whereby the base line of the opening extended beyond the base angles, all as shown in Fig. 3. The opening so formed is extended inwardly from the face of the plate a short distance, being then flared out, andextended through the plate, as indicated by the numeral 13, to provide clearance for the lead cover as it passes through the open ing (5, hereinafter described.

14. indicates an opening formed in the remaining portion of the member 1, which opening is similar to the dic-plate opening 13.

The core for the opening 6 is constructed preferably as shown in Fig. 1, and consists of a member 15, of the same shape in cross section as the opening 6, but of less measurement than the opening, the difference being equal to the thickness of metal designed to pass through the opening between its sides and base and the faces of the member 15, and in order to maintain themember 15 positively in position centrally of the opening 6, so that a uniform thickness of metal will be obtained it is provided with an extension 16 from which project arms 17, 18, 19 and 20, forming a bridge adapted to bear on the face of the die plate 5 and the ends of which arms are designed to fit the bell mouth 3, being held in place by screws 21 threaded through the walls of the member 1 to engage on the eIands of the respective arms, as shown in owel pins 33, are provided in the two opposite arms 18 and 20 for engagement with suitable holes in the plate 5, while similar dowels 34: are secured into the plate 5, adapted to engage suitable holes in the memher 1, as shown in Figs, 1 and 2, these dowels being provided for the purpose of positioning the several parts one with the other when the die is being put together.

- In operation the die, assembled as shown in Fig. 2, is secured to a cylindrical plunger having a bore not less than the opening 13 of the member 1. The die is then inserted, bellmouth down, into the lead pot containing the viscid metal from which the cover is to be formed, and as it is forced downwardly thereinto, the viscid lead passes up through the plate between the member 15, and emerges in the cover form shown in Fig. 5, that is, in a length according to the capacity of the lead pot and transversely triangular in shape having outstanding wings 22 and 23, extending intermediate the length of its sides 24 and 25, and outstanding walls 26 and 27 adjacent its base angles 28 and 29, these angles being flattened and the base extended at each end beyond the flattened angles, as at 30 and 31. Into this cover is inserted a steel T bar 82 and the form is then deformed so as to envelop or hug the T whereby the wings 22 and 23 take a horizontal position, the walls 26 and 27 take a vertical position to form a main gutter, and the extensions and 31 an upwardly inclined position to form condensation gutters.

It will be seen, therefore, that we have devised a process for making glazing bars and a means for carrying out the same which insures economy, and complete uniformity in the thickness of the bar cover.

What we claim as our invention is:

1. A process of making glazing bars which consists in forming a cover transversely triangular in shape having outstanding walls at the bottom of its sides and its base extended at each end, inserting a T bar into said cover, and then deforming the cover to envelop the T whereby the outstanding r walls take a vertical position and the base extensions an upwardly inclined position.

2. A process of making glazing bars which consists in forming a cover transversely triangular in shape having its base angles flattened and outstanding walls adjacent said angles and its base extended at each end beyond the angles, inserting a T bar into said cover, and then deforming the cover to envelop the T whereby the outstanding walls take a vertical position and the base-extensions an upwardly inclined position.

3. A process of making glazing bars which consists in forming a cover transversely triangular in shape having outstanding wings extending intermediate the length of its sides and outstanding walls at the bottom of its sides and its base extended at each end, in serting a T bar into said cover, and then deforming the cover to envelop the T whereby the said wings take a horizontal position,

the said walls a vertical position and the base extensions an upwardly inclined position.

Dated at Vancouver, B. O, Canada, this P 4th day of June, 1918. 

